Rotary pump.



A. ENGIUND. ROTARY PUMP.

APPLICATION FILED FEB. I2,\I9l8.

l ,278, 25 Patented Sept. 10, 1918.

IN VEN TOR.

WITNESS ATTORNEYS sraans rarnnr essieu..

AXEL ENGLUND, 0F OAKLAND, CALIFORNIA.

ROTARY `PUMP.

To all whom t may concern.'

Be it known that 1 AXEL ENGLUND, a citizen of Finland, residing at Oakland, in the county of Alameda and State of California', have invented certain new and useful Improvements in Rotary Pumps, of which the following is a specification.

The present invention relates to rotary pumps particularly that type adapted for lifting a column of fluid preferably water from a reservoir and discharging the same preferably under pressure at a distant point.

The invention consists primarily in providing a pump employing a rotary runner having mounted therein a reciprocating" plunger adapted during the cycle of rotation of the runner to withdraw a charge of liuid from the supply and discharge the sani further object of the invention is to provide ay construction wherein the means for rotating the runner causes a reciprocation of the plunger whereby internalmechanism of the pump is simplified and a capacity is provided which is considerably increased over pumps of the same relative size of this type now employed.

With the above mentioned and other objects in view, the invention consists in the novel construction and combination of parts hereinafter described and illustrated in the accompanying drawings', and set forth in the claims hereto appended, it being understood that various changes in the form, proportion, size and minor details of construction within the scope of the claims may be resorted to without departing from the spirit or sacrificing any of the advantages of the invention.

To more fully comprehend the invention, reference is directed 4to the accompanying drawings, wherein,

Figure 1 is a view in elevation vof the preferred embodiment of my invention, illusvtrating the same in connection with a iuid Supply- Fig. 2 is a sectional view taken on the line 2 2 of Fig. 1 viewed in the direction of the arrows, illustrating the plunger at the commencement of its suction and discharge movement.

Fig. 3 is a sectional view taken on line 3 3 of Fig. 1 viewed in the direction of the Specification of Letters Patent.`

Application led February 12, 1918.

' y the junction Patented Sept. 10, 1918. Serial No. 216,729.

arrows with the plunger illustrated in the center of its suction and discharge movement.

Fig. 4; is a sectional view similar to Fig. 3, with the plunger at the end of its suction and discharge movement.

Fig. 5 is a sectional view taken on line 5-5 of Fig. 3 viewed in the direction of the arrows. i

Referring more particularly to the several views of the dra-Wings, wherein like characters of reference indicate corresponding parts, the numeral l designates a suitable cylindrical housing provided at diametrically opposite points with the inlet and discharge openings 2 and `3. The housing is preferably supported by suitable feet or other supports 4 and to the inlet opening thereof is preferably secured a feed or suction pipe 5, perforated at its lower end as at 6 and depending into a suitable fluid supplv 7. To the discharge opening 3 is preferably secured a suitable discharge pipe 8 leading to any desired point.

Within the cylindrical housing 1, is rotat. bly mounted a suitable annular runner 9, the outer surface of which is in slight frictional contact with the inner surface of the cylindrical housing 1. -The runner 9, is provided at diametrically opposite points with ports l0 and within said runner are mounted the inner face plates 11., extending to the edge of said opening, thereby providing an open ended transverse channel within said runner and which is adapted on the rotation of said runner to alternately register at its opposite ends with said inlet and discharge openings 2 andl3.

Mounted to reciprocate within the transversely extending channel in the runner is a suitable shell 12 formed of the end wall members 13 which operate on the faceplates 11 in slight frictional contact, and said end wall members are connected by the sidewall members 14 arranged at right angles thereto and in spaced relation with each other, providing a chamber 15 withinsaid shell. The side wall members are 4each rovided adjacent one end with inlet andA ischarge ports 16 arranged preferably at a point adjacent of the said end wa'll members 13 and 14, and said ports 16 are preferably at opposite ends of said side wa'll members.

lll

A suitable strengthening web 1T extends from the side Wall members as in the drav ings.

the Wall of the housing 1.

Extending transversely through the heus ing 1 and rotatably mounted at its ends in bearings 2O in the face plates 18 is a straight shaft 21, said shaft passing through the chamber 15, and disposed eccentrically of the runner 9. The central portion of the shaft passing through the chamber 15 is substantially rectangular in cross-section with opposite faces thereof in frictional contact with the inner faces of the side Walls 12 of said shell. The shaft carries on its outer end a suitable Wheel 22 to Which povver is applied for rotating the same in the direction of the arrows, Figs. 2 and 3 of the drawings. 1f desirable, suitable packings 2d may be positioned to surround the shaft adjacent its bearing points rto prevent a leakage of fluid around the same.

By carefully examining Figs. 2, 3 and 4 of the drawings, it will be apparent on the rotation of the shaft in the direction of the arrows, that the runner on arriving at a position as in Fig. 2 Willposition one of the ports 10 thereof to register with the inlet opening .2, and the other to register With the discharge opening 3 of the housing, at Which time the chamber A Will be in a position to draw a charge of fluid from the supply 7 and the charge already drawn into the chamber B during a previous operation Will begin to discharge through the outlet pipe 8, this being caused by the passing of the squared portion of the shaft 21 eccentrically through the runner 9, as such positioning causes, on the rotation of the shaft, a reciprocation of the shell within the open ended channel of the runner and also causes a reciprocation of the shell relatively to the shaft 21. On the continued rotation of the shaft from a position as in Fig. 2 to that in Fig. 3, the openings 10 of the runner Will have been moved in full register with the inlet and discharge openings 2 and 3 of the housing and during such movement the shell has been moved a slight distance, approximately one -half Way, longitudinally of the open ended channel and during such movement said shell has been reciprocated approximatelyY its full length relative to the squared portion of the shaft 21, which movement has created a suction in the chamber A to draw fluid therein and compression in the chamber B to expel a portion of the fluid therefrom, thus the chambers A and B at this time contain approximately the same amount of fluid but the chamber 15 has been exhausted of its fluid at one side of the shaft 21 and that portion opposite said exhausted end is completely filled through the port 1b. By further referring to Fig. d, it will be apparent that the openings 10 in the runner 9 are, due to the continual rotation of the shaft, in a position. Where the saine about cut off the communication between the opposite ends of the channel and the inlet and discharge openings 2 and 3 of the housing, at which time the shell has reached the end of its reciprocation in one direction and thereby discharging into the outlet 5 the fluid contained in the chamber l, and during such movement the chamber A and that portion of the chamber 15 at one side of the squared portion of the shaft 21 are filled to their capacity With fluid Which is forced therefrom during the next succeeding onehalf revolution of the shaft 21. 1t Will be apparent that on each one-half revolution of the shaft 21 a volume of fluid is drawn into one of the chambers A or 13, and the fluid contained in the other chamber is discharged therefrom providing a pump of the compound or double acting type.

lt is to be understood that 4if desirable a pump may be provided employing a plurality of units illustrated in the drawings, that is When it is desirable to design a pump of greater capacity than the one at present illustrated.

Having thus described my invention What I claim is v 1. A rotary pum comprising a housing provided With supp y and discharge openings, a runner rotatably mounted therein and provided With a transverse passage terminating at its opposite ends in supply and discharge openings, a shell formed With an elongated channel and mounted to reciprocate Within the ltransverse passage of said runner, said shell provided with supply and discharge passages, a rotary shaft extending eccentrically through said housing and through said elongated shell channel, said shaft providing a pump plunger for said channel and adapted to rotate said runner Within said housing and to cause a reciprocation of said shell Within said runner during such rotation.

2. A rotary pump comprising a circular casing provided with opposed inlet and discharge openings, a rotatable circular runner concentrically disposed Within said casing and provided With a transversely disposed open ended channel adapted on the rotation of the runner to register With said inlet and discharge openings, a chambered substantially elongated shell Within said channel and mounted for reciprocation therein and to provide a plunger therefor, said shell formed at opposite ends in opposing side Walls With inlet and discharge openings, one communicating vvith each end of the said channel at opposite sides thereof, and a shaft rotatably mounted in said casing and shaft passing through said shell intermediate the openings therein and adapted on the rotation thereof to cause a rotation of said runner, a reciprocation of said shell therein,

, and a reciprocation of the shell on saidshaft,

whereby suction and discharge ressures are created on opposite sides of sai channel on the registering of the same with the inlet and discharge openings of said casing.

3. A rotary pump comprising a housing provided with supply and discharge openings, a runner rotatably mounted therein and provided with a transverse passage terminating at its opposite ends in'supply and discharge openings, a shell formed' with an` elongated channel and mounted to reciprocate within the transverse runner, said shell provided with supply and discharge passages, and means extending` through said housing and through said elongated shell channel and providing a pump plunger for said channel and adapted to rotate said runner within said housing and to cause a reciprocation of said shell within said runner during such rotation.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

AXEL ENGLUND. Witnesses: x

HARRY A. To'rrnN, D. B. RICHARDS.

passage of saidv 

